Assembly notes: Tools needed: Phillips screw driver, 5 mm or 3/16" nut driver. Remove hex nuts from DB9 connector of WRAP board. Install CF card. Hold WRAP board with the DB9 connector facing up (so the shell doesn't fall off), then slide the enclosure base over it at a slight angle. Tilt the WRAP board into place and insert all screws and hex nuts. Tip for replacing self-cutting and plastic screws: To find the start of the existing thread, turn screw counterclockwise first until you feel the start.